<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>小黑记事本</title>
</head>

<body>

  <!-- 主体区域 -->
  <section id="todoapp">
    <!-- 输入框   -->
    <header class="header">
      <h1>小黑记事本</h1>
      <input v-model="inputValue" autofocus="autofocus" autocomplete="off"
       placeholder="请输入任务" class="new-todo" @keyup.enter="add">
    </header>
    <!-- 列表区域 -->
    <section class="main">
      <ul class="todo-list">
        <li class="todo" v-for="(item,index) in list">
          <div id="view">
            <span class="index">{{ index+1 }}</span>
            <label>{{item}}</label>
            <button class="destroy" @click="remove(index)">删除</button>
          </div>
        </li>
      </ul>
    </section>
    <!-- 统计和清空 -->
    <footer class="footer">

      <span class="todo-count" v-if="list.length!=0">
        <strong>{{ list.length }}</strong>
        item left
      </span>
      <button @click="clear" v-show="list.length!=0">Clear</button>

    </footer>

  </section>
  <!-- 底部  -->
  <footer class="info">
    <p>
      <a href="http://www.baidu.com"></a>
    </p>
  </footer>

</body>

<script src="/VueJs/vue.js"></script>

<script>
  var app = new Vue({
    el: "#todoapp",
    data: {
      list: ["写代码", "吃饭饭", "睡觉觉"],
      inputValue:"好好学习，天天向上"
    },
    methods:{
      add:function(){
        // 新增元素
        this.list.push(this.inputValue);
      },
      remove:function(index){
        // 删除元素
        this.list.splice(index,1);
      },
      clear:function(){
        this.list =[];
      }
    }
  })
</script>


</html>